字典转数组 数组转字典

 NSMutableArray *dicToArray = [NSMutableArray array];

 NSMutableDictionary *arrayToDic = [NSMutableDictionary dictionary];

  NSDictionary *dic = @{@"1":@"one",@"2":@"two",@"3":@"three"};

 //字典转数组 

  [dic enumerateKeysAndObjectsUsingBlock:^(id  _Nonnull key, id  _Nonnull obj, BOOL * _Nonnull stop) {

        [dicToArray addObject:[NSString stringWithFormat:@"%@:%@",key,obj]];

    }];

    NSLog(@"dicToArray====%@",dicToArray);

//数组转字典

    [dicToArray enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {

     NSLog(@"obj===%@===idx===%lu",obj,(unsigned long)idx);

    NSArray *array = [obj componentsSeparatedByString:@":"];//分割字符串     

　　  [arrayToDic setObject:array[1] forKey:array[0]];

  }]; 

NSLog(@"arrayToDic====%@",arrayToDic);